Electrical Control and PLC Programming

This book is mainly composed of three parts. The first part is Chapter 1 to 3, which introduces commonly used low-voltage electrical appliances, typical control circuits, and typical electrical control system analysis and design methods in electrical control; the second part is Chapter 4 to 7, which introduces the basics of programmable controllers, focusing on the Siemens S7-1200 PLC to introduce the structural principles of the Siemens S7 series programmable controllers, command systems and their applications, and control system program analysis and design methods; the third part is Chapter 8, which introduces programmable controllers and electrical transmission systems. At the same time, according to the needs of production practice and new technologies, the teaching materials also include "experimental instructions, course design instructions, and competition introductions". Strive to be relevant to reality, highlight applications, and focus on examples. The content is arranged step by step, from the shallower to the deeper, and the content description is concise, illustrated, and easy to understand, making it easy for teaching and self-study.